Linked Lists

1What is a Linked List?✨

A linked list is a dynamic data structure that allows you to store a collection of items. Unlike arrays, linked lists can grow and shrink in size, making them very flexible for managing data!

2Why Learn Linked Lists?🎯

• ✓ Efficient memory usage
• ✓ Dynamic resizing capabilities
• ✓ Easier to insert and delete elements
• ✓ Fundamental for many advanced data structures (like stacks and queues)

3Creating a Linked List💡

To start, you need to define a node structure that contains data and a pointer to the next node. Here's how to create a basic node:

typedef struct Node {
    int data;
    struct Node* next;
} Node;

This structure helps you connect nodes together!

4Adding Elements to a Linked List🚀

You can add new nodes to your linked list easily. For example, here's a function that inserts a new node at the beginning:

void insertAtBeginning(Node** head, int newData) {
    Node* newNode = (Node*)malloc(sizeof(Node));
    newNode->data = newData;
    newNode->next = (*head);
    (*head) = newNode;
}

This function creates a new node and makes it the head of the list!

5Traversing a Linked List🔍

To see all elements in your linked list, you can traverse it using a loop. Check out this example:

void printList(Node* node) {
    while (node != NULL) {
        printf("%d -> ", node->data);
        node = node->next;
    }
    printf("NULL\n");
}

This function prints each node's data until it reaches the end!

6Your Linked List Project⭐

• This grade, you will build a simple contact manager using linked lists.
• ✓ Add contacts dynamically
• ✓ Remove contacts
• ✓ Display all contacts
• ✓ Search for a contact by name

Get ready to flex your coding skills with linked lists!